Pavan Gayakwad

Anytime with following command in Linux terminal you get to know the version of Java JDK installed java --version Installation There are two Java deployments available for you install (1) Oracle Java (oracle-java) (2) Java Open SDK (openjdk) OpenJDK Most of the linux distributions either come installed with OpenJDK however just in-case if you get it pre-installed, you can run below command to get it easily. sudo apt-get install openjdk-default Oracle JDK Add the repository first sudo add-apt-repository ppa:linuxuprising/java Update the changes sudo apt-get update Initiate installer sudo apt install oracle-java11-installer Then set the installed version of Java as default sudo apt install oracle-java11-set-default Now, running below command can help you check that the installation was successful java --version Uninstallation Below link has the detailed information: https://novicestuffs.wordpress.com/2017/04/25/how-to-uninstall-java-from-linux/